DEBIAN-CVE-2026-41479

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Source

https://security-tracker.debian.org/tracker/CVE-2026-41479

Import Source

https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41479.json

JSON Data

https://api.osv.dev/v1/vulns/DEBIAN-CVE-2026-41479

Upstream

CVE-2026-41479

Published

2026-06-22T21:16:24Z

Modified

2026-09-14T17:03:33Z

Severity

5.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N CVSS Calculator

Summary

[none]

Details

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to 1.6.10 and 1.7.1, Authlib's OAuth 2.0 authorization endpoint can be turned into an unauthenticated open redirect when a request uses an unsupported response_type and supplies an attacker-controlled redirect_uri. The vulnerable behavior happens before client lookup and before any redirect URI validation. As a result, an attacker does not need a valid client registration, an authenticated user, or any prior state. A single request to the authorization endpoint is enough to obtain a 302 Location response to an arbitrary attacker-controlled URL. This vulnerability is fixed in 1.6.10 and 1.7.1.

References

https://security-tracker.debian.org/tracker/CVE-2026-41479

Affected packages

Debian:13 / python-authlib

Package

Name: python-authlib
Purl: pkg:deb/debian/python-authlib?arch=source&distro=trixie

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Affected versions

1.*

1.6.0-1

1.6.0-1+deb13u1

1.6.1-1

1.6.3-1

1.6.4-1

1.6.5-1

1.6.6-1

1.6.7-1

1.6.8-1

1.6.9-1

1.7.0-1

1.7.2-1

1.7.2-2

Ecosystem specific

{
    "urgency":  "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-41479.json"

Debian:14 / python-authlib